description: null package_name: gdrl.fhir.r4 derivation: constraint name: ReteLabIdentifierAssignerSiglaNazione type: Extension elements: url: pattern: {type: Uri, value: 'https://fhir.siss.regione.lombardia.it/StructureDefinition/ReteLabIdentifierAssignerSiglaNazione'} index: 0 value: choices: [valueString, valueCodeableConcept] index: 2 valueString: {type: string, choiceOf: value, index: 3} valueCodeableConcept: {type: CodeableConcept, choiceOf: value, index: 4} package_version: 1.1.0 class: extension kind: complex-type url: https://fhir.siss.regione.lombardia.it/StructureDefinition/ReteLabIdentifierAssignerSiglaNazione base: http://hl7.org/fhir/StructureDefinition/Extension version: null